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Sm-Nd Dating and In-Situ LA-ICP-MS Trace Element Analyses of Scheelite from the Longshan Sb-Au Deposit, Xiangzhong Metallogenic Province, South China

Published on Jan 30, 2019in Minerals 1.83
· DOI :10.3390/min9020087
Zhiyuan Zhang3
Estimated H-index: 3
,
Guiqing Xie + 3 AuthorsWei Li4
Estimated H-index: 4
Abstract
Longshan is an important Sb-Au ore deposit (3.7 Mt @4.5 wt. % Sb and 4.6 g/t Au) in the Xiangzhong metallogenic province (XZMP), South China. In the present work, trace element composition, Sm-Nd isotope dating, and Sr isotope of scheelite from the Longshan Sb-Au deposit are used to constrain the genesis of the deposit. Based on mineral assemblages and geological characteristics, two types of scheelites can be distinguished (Sch1 and Sch2). Sch1 is granular and cemented by stibnite, while Sch2 is commonly present in stibnite, pyrite, calcite, and quartz veins, indicating that Sch2 is later than Sch1. The Sm-Nd isochron age defined by Sch1 is 210 ± 2 Ma (MSWD = 1.0, n = 4). This age is interpreted as the age of Sb-Au mineralization and overlaps with the 201–228 Ma granitic rocks in the XZMP. Sch1 exhibits high ΣREE + Y contents (43.5 to 104 ppm), low Sr values (2687 to 6318 ppm, average of 4018 ppm), and a narrow range of 87Sr/86Sr values (0.7209 to 0.7210, average of 0.7209). In contrast, the elevated Sr abundance (4525 to 11,040 ppm, average of 6874 ppm) and wide 87Sr/86Sr ratios (0.7209 to 0.7228, average of 0.7214) in Sch2 were possibly caused by fluid-rock interaction mixing with Sr-enriched basement rocks. Sulfides have a narrow range of δ34S values of −1.8‰ to 3.2‰, with an average value of 1.1‰ (n = 7). Geochronological, geochemical and isotopic data suggest that the Longshan Sb-Au deposit is possible genetically related to the Late Triassic granitic intrusion in the XZMP.
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Published on Mar 1, 2019in Mineralium Deposita 3.37
Guiqing Xie3
Estimated H-index: 3
,
Jingwen Mao33
Estimated H-index: 33
+ 2 AuthorsZhiyuan Zhang3
Estimated H-index: 3
The Caojiaba tungsten deposit (19.03 Mt@ 0.37 wt% WO3) is hosted by skarn along the contact between clastic and carbonate rocks in the Xiangzhong Metallogenic Province of southern China. The deposit is characterized by an early prograde skarn containing low andraditic garnet (Ad0.7–21.9) and hedenbergitic pyroxene (Hd52.9–77.3) overprinted by a retrograde biotite–chlorite assemblage and then by quartz–scheelite veins, similar to well-studied reduced tungsten skarns worldwide. Scheelite has low M...
7 Citations Source Cite
Published on Jan 1, 2019in Mineralium Deposita 3.37
Guiqing Xie3
Estimated H-index: 3
,
Jingwen Mao33
Estimated H-index: 33
+ 2 AuthorsZhiyuan Zhang3
Estimated H-index: 3
The Yangjiashan scheelite-bearing deposit (38,663 metric tons of WO3 with an average ore grade of 0.70% WO3) is hosted in quartz veins in a biotite monzogranite intrusion and surrounding slate in the Xiangzhong Metallogenic Province of southern China. The monzogranite has a zircon SHRIMP U–Pb age of 406.6 ± 2.8 Ma (2σ, n = 20, MSWD = 1.4). Cassiterite coexisting with scheelite yields a weighted mean 206Pb/238U age of 409.8 ± 5.9 Ma (2σ, n = 30, MSWD = 0.20), and molybdenite intergrown with schee...
7 Citations Source Cite
Published on Nov 1, 2018in Economic Geology 3.29
Emma J. Scanlan1
Estimated H-index: 1
(University of Otago),
James M. Scott16
Estimated H-index: 16
(University of Otago)
+ 3 AuthorsPetrus le Roux10
Estimated H-index: 10
(UCT: University of Cape Town)
1 Citations Source Cite
Published on Aug 1, 2018in Ore Geology Reviews 3.99
Qiang Zhang1
Estimated H-index: 1
(NU: Nanjing University),
Rongqing Zhang12
Estimated H-index: 12
(NU: Nanjing University)
+ 2 AuthorsJin-Wei Wu2
Estimated H-index: 2
(NU: Nanjing University)
Abstract Veinlet-disseminated and vein-type tungsten deposits are important tungsten resources in South China and show remarkable diversity in dominant tungsten minerals. To better understand their genesis, scheelite from the Shimensi veinlet-disseminated deposit and wolframite from the Xihuashan and Piaotang vein-type deposits were selected to conduct in-situ laser ablation-inductively coupled plasma-mass spectrometry trace element analyses. The Shimensi tungsten mineralization occurs in intens...
8 Citations Source Cite
Published on Aug 1, 2018in Ore Geology Reviews 3.99
Xiao-Yu Li1
Estimated H-index: 1
(NU: Nanjing University),
Jian-Feng Gao27
Estimated H-index: 27
(CAS: Chinese Academy of Sciences)
+ 3 AuthorsJin-Wei Wu2
Estimated H-index: 2
(NU: Nanjing University)
Abstract The Late Triassic Muguayuan W deposit is located in the middle of the Jiangnan Orogen, South China. This deposit is characterized by veinlet-disseminated W mineralization that developed in the Sanxianba granitic porphyry stock. The ore minerals are mainly scheelite with minor molybdenite and wolframite. Scheelite mineralization was closely related to greisenization and phyllic alteration, and took place in two stages. Stage I involved scheelite ± wolframite ± molybdenite + quartz veinle...
2 Citations Source Cite
Published on May 30, 2018in Canadian Mineralogist 0.94
Rémy S. Poulin2
Estimated H-index: 2
(Laurentian University),
Daniel J. Kontak22
Estimated H-index: 22
(Laurentian University)
+ 1 AuthorsM. Beth McClenaghan8
Estimated H-index: 8
(Geological Survey of Canada)
3 Citations Source Cite
Published on Mar 1, 2018in Ore Geology Reviews 3.99
Teng Ding4
Estimated H-index: 4
(Hohai University),
Dongsheng Ma5
Estimated H-index: 5
(NU: Nanjing University)
+ 1 AuthorsRongqing Zhang12
Estimated H-index: 12
(CAS: Chinese Academy of Sciences)
Abstract The Huangshaping W–Mo–Pb–Zn deposit in southern Hunan province, south China, contains multiple generations of garnet and scheelite in skarn and sulfide–carbonate altered rocks. Optical characteristics and chondrite-normalized rare earth element (REE N ) patterns obtained by in situ laser ablation–inductively coupled plasma–mass spectrometry analysis were used to distinguish different generations of garnet and scheelite. These data show a clear correspondence of garnet REE N patterns to ...
5 Citations Source Cite
Published on Mar 1, 2018in Gondwana Research 5.66
Huan Li10
Estimated H-index: 10
(China University of Geosciences),
Qian-Hong Wu5
Estimated H-index: 5
(CSU: Central South University)
+ 4 AuthorsZhi-Wei Lin1
Estimated H-index: 1
(CSU: Central South University)
Abstract Central-western Hunan in South China hosts the largest antimony belt in the world with two types of Sb deposits identified: Sb-Au Woxi-type and Sb only Xikuangshan-type. Banxi is the most representative deposit in the region with vein-type Sb mineralization hosted in Neoproterozoic clastic rocks, stibnite developing in ores, and arsenopyrite mainly occurring in altered country rocks. Trace element contents (including rare earth elements; REE) and isotopic ratios (S, Pb, Sr, Nd, He and A...
9 Citations Source Cite
Published on Jan 1, 2018in Chemical Geology 3.57
Wen Winston Zhao3
Estimated H-index: 3
(HKU: University of Hong Kong),
Mei-Fu Zhou69
Estimated H-index: 69
(HKU: University of Hong Kong)
+ 1 AuthorsZheng Zhao4
Estimated H-index: 4
Abstract Scheelite is the main ore mineral in skarn-type tungsten deposits, and a common accessory mineral in a variety of rock-types. The Baoshan deposit in South China is one of the most important polymetallic scheelite skarn deposits in China, hosting 40,000 t of WO 3 with economic concentrations of Zn, Cu, and Ag. It is hosted by a calcic skarn that is zoned outwards mineralogically from garnet-clinopyroxene, through clinopyroxene-garnet, to wollastonite, and overprinted by retrograde minera...
10 Citations Source Cite
Published on Oct 1, 2017in Earth-Science Reviews 7.49
Peng Gao6
Estimated H-index: 6
(USTC: University of Science and Technology of China),
Yong-Fei Zheng72
Estimated H-index: 72
(USTC: University of Science and Technology of China),
Zi-Fu Zhao39
Estimated H-index: 39
(USTC: University of Science and Technology of China)
Abstract Granitic rocks of Phanerozoic age are common in South China. They are spatially and temporally closely associated with hydrothermal ore deposits. Therefore, many studies have been devoted to these granites regarding their petrogenesis. This study presents a review on the geochemistry of Triassic granites in South China because the Triassic is an important period for the Indosinian orogeny in Southeast Asia. Petrographic investigations indicate that these granites can be categorized into...
13 Citations Source Cite
Cited By0
Newest
Published on Mar 1, 2019in Mineralium Deposita 3.37
Guiqing Xie3
Estimated H-index: 3
,
Jingwen Mao33
Estimated H-index: 33
+ 2 AuthorsZhiyuan Zhang3
Estimated H-index: 3
The Caojiaba tungsten deposit (19.03 Mt@ 0.37 wt% WO3) is hosted by skarn along the contact between clastic and carbonate rocks in the Xiangzhong Metallogenic Province of southern China. The deposit is characterized by an early prograde skarn containing low andraditic garnet (Ad0.7–21.9) and hedenbergitic pyroxene (Hd52.9–77.3) overprinted by a retrograde biotite–chlorite assemblage and then by quartz–scheelite veins, similar to well-studied reduced tungsten skarns worldwide. Scheelite has low M...
7 Citations Source Cite